Calculate the percentage yield of azo dye obtained in this experiment. (Hint: In this experiment, both naphthalen-2-ol and sodium nitrate(III) are the limiting reagents. Therefore the percentage yield calculation should be based on the amounts of these two reagents used.)

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

The excretory system,need answers for all: )